Documentdetail
ID kaart
oai:arXiv.org:2410.22094
Onderwerp
Astrophysics - Cosmology and Nonga... High Energy Physics - Phenomenolog...Auteur
Pérez-Poyatos, José María Sanz, VeronicaCategorie
wetenschappen: astrofysica
Jaar
2024
vermelding datum
13-11-2024
Trefwoorden
dr darkBeschrijving
We investigate the production of dark radiation (DR) from axions and axion-like particles (ALPs) as potential origins of dark matter.
Focusing on the dark matter misalignment mechanism, we examine non-thermal, pre-inflationary scenarios that could lead to the generation of DR.
A key part of our analysis involves a Bayesian approach to confront ALP parameter space with current cosmological data.
Additionally, we explore whether DR production could offer solutions to persistent cosmological anomalies, particularly those related to the Hubble constant $H_0$ tension and the $S_8$ parameter discrepancy.
Our findings aim to shed new light on the role of ALPs in addressing these open issues in cosmology.
;Comment: 37 pages, 6 figures, 3 tables.
v2: updated references and figures
Pérez-Poyatos, José María,Sanz, Veronica, 2024, Dark Radiation production in axion misalignment mechanisms and the cosmological tensions
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